EP2440006B1 - Elektrische Heizvorrichtung - Google Patents

Elektrische Heizvorrichtung Download PDF

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Publication number
EP2440006B1
EP2440006B1 EP20100013475 EP10013475A EP2440006B1 EP 2440006 B1 EP2440006 B1 EP 2440006B1 EP 20100013475 EP20100013475 EP 20100013475 EP 10013475 A EP10013475 A EP 10013475A EP 2440006 B1 EP2440006 B1 EP 2440006B1
Authority
EP
European Patent Office
Prior art keywords
housing
heating device
pump
electrical heating
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20100013475
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2440006A1 (de
Inventor
Maurice Clauss
Franz Bohlender
Michael Niederer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eberspaecher Catem GmbH and Co KG
Original Assignee
Eberspaecher Catem GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eberspaecher Catem GmbH and Co KG filed Critical Eberspaecher Catem GmbH and Co KG
Priority to EP20100013475 priority Critical patent/EP2440006B1/de
Priority to JP2011219193A priority patent/JP5894406B2/ja
Priority to US13/252,503 priority patent/US9119232B2/en
Priority to KR1020110102456A priority patent/KR20120036774A/ko
Priority to CN201110300907.6A priority patent/CN102563839B/zh
Publication of EP2440006A1 publication Critical patent/EP2440006A1/de
Application granted granted Critical
Publication of EP2440006B1 publication Critical patent/EP2440006B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the present invention relates to an electric heater having a housing which encloses a medium permeable by a medium circulation chamber, in which project heating ribs, which are each provided with a U-shaped recess which open to a uniform connection chamber, which from the circulation chamber by a In the region of the open ends of the U-shaped recesses provided partition wall is separated from the circulation chamber, and at least receives a PTC heating element in which rests in heat-conductive contact on opposite inner sides of the U-shaped recess.
  • the present invention is based on the problem of developing the generic electric heater.
  • the present invention seeks to provide a compact electric heater which is relatively simple in construction and can be operated even at high working pressures of the fluid to be heated.
  • the present invention proposes a heating device having the features of claim 1.
  • This differs from the generic heating device by a housing cover which carries a pump and forms a pumping channel which opens into an inlet opening of the pump, which is formed by a pump housing.
  • the electric heater according to the invention accordingly allows the tubeless connection of the pump to the housing.
  • the medium to be heated can pass directly from the circulation chamber into the pump without it being necessary to mount tube pieces between the heating device and the pump in a complicated manner, which are prone to failure.
  • the housing which encloses the circulation chamber, closed with a housing cover, which is provided in a structural unit with the pump.
  • a compact electric heater is formed.
  • the pumping channel opposite the circulation chamber and separated by a relatively thin cover or membrane.
  • the hydrostatic pressure on both sides of this membrane is substantially equal and the structure is simplified overall and nevertheless particularly suitable to be operated with high fluid pressures.
  • a thin membrane between the pumping channel and the circulation chamber also builds up less thick, which further favors the compact design.
  • the housing cover designed according to the invention preferably forms parts of the pump housing from a block.
  • the housing cover can be designed as an aluminum die cast part.
  • the pump housing and the housing preferably each carry a connection piece, wherein the connection piece carried by the pump housing communicates directly with a pumping chamber of the pump which pumps or heats fluid to be heated into the pumping channel.
  • a connecting piece according to the invention is used in particular for connecting a hose for guiding the fluid to be heated outside the housing or the housing cover and to other system components, such as heat exchangers within a motor vehicle.
  • the housing of the electric heater is preferably an elongate housing, wherein the connection to the pump and / or the circulation chamber is preferably frontally, preferably in each case by connecting pieces, which are provided on the end face.
  • a control housing At the opposite end of the connecting piece is usually a control housing, which receives the control preferably for both the PTC heating elements and the pump in itself.
  • the aforementioned membrane is formed by a cover.
  • a cover according to the invention is sealingly clamped between the housing and the housing cover and accordingly separates a formed in the circulation chamber flow channel which is enclosed between the partition and the cover, from the pumping channel.
  • the cover member further has a flow passage opening through which the flow channel communicates with the pumping channel. This flow passage opening is preferably provided at a front end of the housing and formed in the manner of an opening in the cover.
  • the cover member may be held within the housing solely by the clamping force between the housing cover and the housing in the edge region of the two housing parts be. Also, a relatively thin cover is held because of the substantially same hydrostatic pressure conditions on both sides of the cover in position between the housing and the housing cover.
  • the heating ribs tapered webs whose end faces are arranged in a support plane for the cover.
  • the housing cover has for this purpose corresponding counter struts. Between the supporting webs and the supporting counter webs while the cover is clamped sealing.
  • This embodiment offers in the region of the webs or counter webs a relatively high surface pressure, which leads to a sealing of the cover plate, so that the fluid to be heated can be pressurized even with a relatively high pressure of more than 35 bar.
  • the support webs are tapered, i. have a thickness that is less than the thickness of the heating ribs. Thickness in this sense is usually understood to mean an extension that runs perpendicular to the direction of insertion of the PTC heating elements into the U-shaped recesses and at right angles to the longitudinal extent of the PTC heating elements.
  • the heating ribs usually extend transversely to the longitudinal extent of an elongated housing. Through these support webs, the cover is applied in a support plane against the housing. This results in a good sealing of the individual, preferably parallel to each other extending flow sections of the meandering flow channel and the pumping channel, which usually extends at right angles to the main sections of the flow channel. Accordingly, the medium to be heated flows completely through the flow passage.
  • a short circuit flow sweeping over the bottom end of the U-shaped recess is prevented.
  • the tapered webs are thinner than the heating ribs, so that a heat transfer to the medium in the region of the bottom of the U-shaped recess can take place, which further improves the thermal efficiency.
  • the heating ribs protrude alternately inwardly from opposite inner sides of the housing, namely such that the flow channel is meandering in the housing and includes flow passages between the free ends of the heating fins and the adjacent inner wall of the housing.
  • the flow deflection takes place in each case between the free ends of the heating ribs and the adjacent side wall.
  • the flow in the flow channel for good heat transfer against the connection of the following in the flow direction heating fin is flowed to the housing. This results in a good heat transfer even at a tethered to the housing foot of the heating rib.
  • the free end of the heating ribs is also flown.
  • a PTC heating element usually consists of one or more PTC ceramic bricks provided on both sides with a metallizing coating, on whose opposite side surfaces sheet metal strips are applied, which are energized with different polarity.
  • PTC heating elements are accommodated in each case a U-shaped recess. This U-shaped recess is open to one side, namely the connection chamber; to the bottom of the U-shaped recess is closed. This closure of the U-shaped recess may be made of a different material than the material through which the housing is formed.
  • the housing and the heating ribs are usually formed from a block. This is usually a cast block.
  • the heating fins and the housing are made uniformly by means of aluminum die casting.
  • the U-shaped recesses are limited by relatively rigid walls of the heating ribs. They are as thin-walled as possible in order to allow good heat transmission and delivery to the medium to be heated.
  • the opposite side walls of the heating ribs are thick and thus stiff enough so that a good system of PTC heating elements on the insides of the U-shaped recess can be ensured.
  • the PTC heating element can be fixed in the recess with a casting compound or the like having a good thermal conductivity.
  • the PTC heating element according to the disclosure of EP 1 872 986 or, more preferably according to EP 1 921 896 A1 educated. Both documents are incorporated by reference into the disclosure of these application documents.
  • the PTC heating element preferably also comprises a wedge element, which is slidable relative to the PTC stone and the sheet metal strips adjacent thereto and by which a good clamping and thermal contact between the PTC heating element and the insides of the U-shaped Interpretations can be achieved.
  • this wedge member and the interaction with the PTC stone reference is made to the disclosure of the two aforementioned European patent applications.
  • the meandering flow in the housing leads to a better thermal efficiency over one of the EP 1 872 986 A1 known electric heater.
  • the U-shaped recesses extend in the main flow direction within the housing. Due to the permanent deflection of the flow through the meandering flow guide a laminar flow is largely avoided.
  • the heat-emitting surfaces of the heating ribs are not flown with a flow which extends substantially parallel to the surface of the ribs. Rather, a good heat dissipation and delivery to the medium to be heated is achieved by velocity components of the flow perpendicular to the surface of the ribs. Since the PTC heating elements also emit heat on both opposite end faces, a good heat dissipation of the heat generated by the PTC heating elements and thus a high thermal efficiency results.
  • the heating ribs are connected via a web to the associated inner wall of the housing.
  • the bar has a lower thickness than the associated heating rib. Accordingly, the heating rib is also contacted at its foot-side end of the front side with fluid.
  • the web can be relatively thin so that not inconsiderable parts of the foot-side end face of the heating rib are exposed in the flow.
  • the surface and in particular the cross-sectional configuration of the web can be adapted to the best possible heat transfer to the foot-side end of the heating rib.
  • a particularly good dissipation of heat with sufficient rigidity provides an embodiment in which the exposed to the flow channel side surfaces of the web are concavely curved, so that forms a trough-shaped bulge between the side wall and the heating rib. In this embodiment Avoiding notches that lead to a weakening of the material. It has been found that in the troughs the heat transfer to the medium to be heated favoring flow conditions are set, especially when the trough without heels merges into an inner wall forming the inner side of the housing, which extends substantially straight between opposite troughs and the outer center Limiting the flow passage forms.
  • the compact design of the heating device is further improved by providing a connecting printed circuit board extending substantially parallel to the dividing wall and accommodated in the connecting chamber.
  • This terminal board has electrical connection elements which contact the partition wall projecting tabs of the PTC heating elements and are electrically connected to conductor tracks, which are formed by said terminal board.
  • the connection board is usually not equipped with electronic components. Rather, it merely serves to electrically connect PTC heating elements via their connection lugs.
  • the conductor tracks of the terminal board may be formed so that a plurality of PTC heating elements are connected together to form a group.
  • the PTC heating elements of the electric heating device are preferably grouped in several heating stages.
  • the summarization of the individual PTC heating elements in a heating stage is usually carried out exclusively via the conductor tracks of the connection board.
  • This can also be electrically connected to a thermocouple, which is usually provided in the region of an end face and protrudes into the circulation chamber. Its temperature signal is usually also forwarded via conductor tracks of the terminal board, preferably on the opposite side of the thermocouple end of the housing.
  • the populated circuit board is located in front of the front side of the housing and is usually provided at a distance from it, so that the provided on the printed circuit board electronic components are spaced from the housing.
  • the terminal board usually has conductor tracks on opposite end faces, which are in electrical connection with the terminal board.
  • the terminal board has conductor tracks on opposite end faces, which are in electrical connection with the terminal board.
  • the housing according to a preferred development on its front side opening to the connection chamber housing connection opening.
  • a plug housing is used, the electrical plug-in elements are connected to plug-in counter-elements, which are provided on the terminal board or the assembled printed circuit board.
  • the two, substantially perpendicular to each other extending circuit boards are provided at a distance from each other.
  • the terminal board is limited in terms of their extension to the connection chamber.
  • the populated printed circuit board is located only frontally in front of the housing.
  • the contacting is preferably carried out via electrical plug-in elements of a plug housing, which is inserted into the metallic housing and usually formed of plastic.
  • the plug housing is preferably inserted into a housing connection opening, which is preferably recessed on an end face of the housing and opens to the connection chamber.
  • the electrical plug-in elements can be electrically connected to one or both sides with plug-in counter-elements by means of plug-in contact.
  • the housing can form bearing surfaces for the electrical printed circuit board, against which it is applied.
  • the circuit board can also be mounted in a control housing.
  • the plug-in contact of the assembled printed circuit board with the electrical plug-in elements is usually carried out when attaching the control housing to the or the housings.
  • the populated printed circuit board can carry electronic components in a conventional manner and contact electrically, generate the power loss.
  • a front side of the housing and the printed circuit board according to a preferred embodiment of the present invention, a front side thermally coupled to the power-generating component coupling cooling element is provided.
  • the cooling element is usually placed under the component that generates the power loss.
  • the electronic component can be supported directly on the cooling element or with the interposition of an electrical insulating layer on the front side of the housing.
  • the cooling element is preferably realized in one piece with the housing, particularly preferably over a projection projecting beyond the end face of the housing.
  • the electric heater comprises a populated printed circuit board, which is electrically connected to the terminal board and extends substantially perpendicular to this
  • this assembled printed circuit board also carries components of the control device for the pump.
  • the control device for the pump and the control device for the electric heater is substantially completely realized on a printed circuit board, which favors a compact design of the electric heater.
  • the populated printed circuit board can form not only the control device for the pump, but also such control circuits for heating circuits, which are provided by a housing cover designed as a housing.
  • the assembled printed circuit board can be formed from the outset so that they can either control the pump, if the housing is closed with a pump housing forming the housing cover, or can control other heating circuits of a housing cover, if this equipped with PTC heating elements and is formed in the manner of a housing.
  • the electrical heating device has a control housing, which encloses the assembled circuit board and forms a control housing connection opening formed corresponding to the housing connection opening.
  • the housing connection opening and the control housing connection opening are preferably designed such that their edges are aligned with each other, so that a paragraph-free passage from the control housing to the connection chamber is possible.
  • the control housing has a further control housing connection opening in this preferred development. This is recessed mirror-symmetrically with respect to a covering the receiving element level on the control housing.
  • this embodiment offers the possibility that the control housing can be used in a housing cover designed as a housing. In this case, in each case the electrical plug-in elements of the plug housing extend in the control housing connection opening or the housing connection opening. If only one housing is connected to the connector housing, the electrical contact of the pump must be made via the further control housing connection opening.
  • FIG. 1 shows an exploded perspective view of a first embodiment of an electric heater.
  • This comprises a first housing 2 and a second housing 4 designed essentially mirror-inverted for this purpose, which are connected to one another with the interposition of a cover element 6 and are each covered on the outside by a housing cover 8.
  • control housing At a common end face of the two housings 2, 4 there is a designated with reference numeral 10 control housing a control device 11 which has a control housing frame 12 which receives a populated circuit board 14 in itself and is closed with a control housing cover 16.
  • the two housings 2, 4 each have, at their front side facing the control housing 10, a housing connection opening 18, which is provided near the housing cover 8.
  • a plug housing 20 each can be introduced, which is made of an insulating material, such as plastic and carries a plurality of plug-in elements 22, which provide electrical contact between provided in the two housings 2, 4 electrical traces and the printed conductors of the printed circuit board 14 ,
  • heating plate elements 24 are shown which are slightly wedge-shaped and correspond to those PTC heating elements described in the European patent application EP 1 921 896 A1 are disclosed. The disclosure of this European Patent Publication is incorporated by reference into the disclosure of this patent application.
  • a temperature sensor 26 is shown in front of the row of hot plate elements / PTC heating elements 24.
  • the housings 2, 4 each form two different chambers, namely, on the one hand, a connection chamber 28 and a circulation chamber separated therefrom by a partition wall 30. From the partition wall 30 go in the circulation chamber 32 from U-shaped recesses 34, which protrude deep into the circulation chamber 32 and height equal to the partition wall 30 to the connection chamber 28 end. These recesses 34 are dimensioned such that the Bankplattenimplantation 24 with a wedge of this encompassed against the opposite walls of the U-shaped recesses 34 can be used to conduct heat, as already mentioned above EP 1 821 896 A1 describes in detail.
  • the circulation chamber 32 of each individual housing 2, 4 extends between a connecting piece 36 for connecting a fluid hose and a flow passage opening 38. Between these two starting or end points of the circulation chamber 32 is formed within this meandering flow channel 40 within the housing 2 and 4 respectively whose course in particular the FIG. 3 can be seen.
  • the flow channel 40 has flow channel sections 42, which extend at right angles to the longitudinal extent of the housing 2 and 4 and are each bounded by outer walls of the U-shaped recesses 34 forming heating ribs 44. These heating ribs 44 are alternately on opposite inner sides 46 of the housing 2, 4 arranged.
  • the housing 2 and the heating ribs 44 are realized uniformly on an aluminum die cast part.
  • the heating ribs 44 are fastened on the opposite inner sides 46 of the housing 2 or 4 via a web 48.
  • This web 48 has a smaller thickness than the heating ribs 44. Thickness in this sense is the extent of the web in a direction perpendicular to the flow channel sections 42, ie in the longitudinal direction of the housing 2 to understand.
  • the exposed to the flow channel 40 surfaces of the webs 48 are concave, whereby a bulge 50 results as part of the flow channel 40.
  • a flow passage 56 is formed between the free ends 52 and the inner side 46 of the housing, which connects the respective flow channel sections 42 together.
  • the two in the FIGS. 1 to 3 shown housing 2 are identical, so that there is a flow path through two meandering flow channels 40 formed between the two connecting pieces 36.
  • the previously described temperature sensors 26 are also provided in duplicate, directly in the region of the mouth of the connecting piece 36.
  • temperature sensor bores 60 are recessed for receiving a respective temperature sensor 26 (cf. FIG. 4 ).
  • tapered webs 70 are formed on the underside of the heating ribs. All tapered webs 70 end in the same height and form a support plane for the cover 6 from. Accordingly, the cover member is sealingly clamped between the tapered ridges 70 and supporting counter ridges 71 of the opposed housings 2, 4.
  • the cover 6 may for example be formed from a metal sheet, which is encapsulated with a soft elastic plastic, on the one hand form a circumferential sealing edge 72, on the other hand, the meandering structure of the tapered webs 70 corresponding sealing strips in the FIG. 1 and 4 are shown and come between the opposing tapered webs 70 to the plant.
  • the sealing edge 72 is clamped between the opposite end faces of the housing 2, 4.
  • the housings 2, 4 have a projection formed by milling, through each of which a cooling element 76 is formed, which forms a cooling element abutment surface 78 extending parallel to the end face and whose opposite surface is in the circulation chamber in FIG Near the flow passage opening 38 is exposed (see. FIG. 4 ).
  • the housing cover 8 are usually formed from stamped metal. These can wear by molding molded seal made of an elastic plastic. The same applies to the housing cover 16. Usually, in any case, the housing cover 8 is applied by screws against the housing 2, 4, which screws also fix the two housing 2, 4 with the interposition of the cover 6 against each other and seal.
  • the housings 2, 4 are identical.
  • In the FIGS. 1 and 3 recognizable feet 80 can be made separately and subsequently attached to the outer wall of the lower housing 2. The heating power of the electric heater can be increased, that a further package of two housings 2, 4 next to the in the FIGS. 1 to 4 Shown is set.
  • the control of the individual heating plate elements 24 can be effected by a uniform control with a unitary control housing.
  • FIGS. 5 to 11 show a further embodiment of a heating device according to the invention. Identical components are identified with the same reference numerals with respect to the previously discussed embodiment.
  • the structure of the housings 2, 4 of the circulation chambers 32 and the connection chambers 28 is substantially identical to the previously discussed embodiment.
  • connection piece 36 In the area of the connection piece 36, a respective contact element 86 is electrically contacted with the housings 2 or 4, which permits a check of the polarity of the two housings 2, 4 in order to avoid a possible fault in the electrical insulation of the housings 2 and 4, respectively to detect the current-carrying paths. From this further contact element 86 is in FIG. 5 in any case, the connection end shown.
  • FIG. 6 taken away parts of the embodiment illustrate the flow path within the housing 2, 4 and the configuration of the heating ribs 44 and the recessed therein U-shaped recesses 34th
  • the Schuplattenetti 24 have a widened collar 88 which rests on the upper side of the partition wall 30, so that the Schuplattenmaschine 24 protrude with a predetermined depth in the U-shaped recesses 34.
  • This collar 88 is surmounted on the upper side by contact lugs 90 of the heating plate elements 24.
  • These contact lugs 90 are cut-free ends of electrically conductive sheet metal plates, which rest on both sides of PTC stones 92, these can energize with different polarity and in FIG. 7 shown in the drawing and identified by reference numeral 93.
  • Four PTC bricks 92 are included one above the other from each hot plate element 24.
  • FIG. 7 can be seen, are the contact lugs 90 at the same level within the connection chamber 28 free. In this level, the connection-side end of the temperature sensor 26 is free.
  • connection chamber 28 In the connection chamber 28 is a connection board on the representation in FIG. 7 was omitted, but in FIG. 2 designated by reference numeral 94.
  • the terminal board 94 extends substantially parallel to the partition wall 30 and rests on the collar 88. It forms electrical connection elements for receiving the individual contact lugs 90 and a contact for the connection side of the temperature sensor 26.
  • the terminal board 94 On the opposite side of the temperature sensor 26, the terminal board 94 has electrical connection receptacles for contacting the exposed in the connection chamber 28 plug-in elements 22.
  • the terminal board 94 and the Electrical connection elements thereof are designed so that all electrical connections to the terminal board 94 are effected when the terminal board 94 is placed on the collar 88. Thus, the electrical plug contacts in the connection chamber 28 are electrically connected to the plug-in elements 22.
  • the populated printed circuit board 14 carries on its surface facing away from the housings 2, 4 different electrical or electronic components 96.
  • the housings 2, 4 facing underside of the assembled printed circuit board 14 are power dissipation generating or control elements 98, in particular power transistors intended.
  • an electrical insulating layer 100 is provided between these power transistors 98 and the cooling element contact surface 78.
  • This insulating layer 100 is located in a recess of a control housing bottom 102 of a flexible material, in particular of a flexible plastic, which is clamped between the housing 2 and 4 facing end face of the control housing frame 12 and the end face of the housing 2, 4.
  • This control housing bottom 102 has receptacles into which the plug housings 20 are introduced.
  • the plug housings 20 have flanges which grip the control housing bottom 102 on the top and bottom sides (cf. FIGS. 7 . 9 ).
  • the control housing bottom 102 protrudes sleeve-shaped in the control housing connection openings 18, whereby a secure mounting and sealing of the connector housing 20 is given (see. FIG. 7 ).
  • the interior of the control housing 10 is accordingly sealed against the connection chamber 28.
  • a structural structure 104 which formed as a separate component is made of thin the structure 104 forming webs 105.
  • the ends of the webs 105 are thickened near the control housing frame 12 to a hammer head 106.
  • the hammer head 106 is held in receiving slots 108 formed on the inner wall of the control box frame 12 therethrough.
  • fastening projections in the form of fastening eyes 110 are formed on the control housing frame 12, the longitudinal extent of which corresponds to the height of the control housing frame 12. These eyes are not circumferentially closed, but provided with an opening to the interior of the control housing frame 12 out slot.
  • the fastening lugs 110 serve to hold threaded rods which connect the control housing frame 12 to the housings 2, 4, including the control housing cover 16. However, they also serve to receive threaded rods which fasten the connection housing 82 to the control housing frame 12.
  • a designated by reference numeral 112 compression member made of a flexible plastic is provided between the support structure 104 and the assembled printed circuit board 14, a designated by reference numeral 112 compression member made of a flexible plastic is provided.
  • This compression element 112 forms on its front side facing the support structure 104 U-shaped recesses for the webs 105 of the support structure 104, so that the compression element 112 is held in a form-fitting manner on the support structure 104.
  • the compression member 112 is also formed like a grid, wherein grid webs 114 of the compression member 112 are surmounted by abutment 116 of the compression member 112, which engage the printed circuit board 14 corresponding thereto formed recesses and directly abut the power dissipation generating control components 98.
  • the pillars 116 are provided where on the support pillars 116 opposite side of the assembled printed circuit board 14, the power dissipation generating control components 98 are arranged. From the compression member 112 and / or the grid bars 114 go from one or more hold-down 117, which act against the circuit board 14.
  • FIG. 11 can recognize the assembled printed circuit board 14 further Kunststoffelementingn 118, which are recessed at opposite edge regions 120 of the assembled printed circuit board 14.
  • the contact element receptacles 118 are formed as slots.
  • a further contact 122 for the contact element 86 is formed as a slot. All slots have extending parallel to each other Longitudinal axes.
  • plug-in counter elements 119 are arranged in the contact element receptacles 118 .
  • the populated printed circuit board 14 is fixed within the control housing frame 12 with little play.
  • cutouts 124 are provided, whereby the fastening eyes 110 are continuous in their longitudinal direction through the plane of the assembled printed circuit board 14 therethrough.
  • the control device 11 is usually first preassembled, i. the assembled printed circuit board 14 is disposed within the control housing frame 12.
  • the connector housing 20 are inserted through the recesses of the control housing bottom 102 and connected thereto. Thereafter, with the interposition of the insulating layer 100, the pre-assembled control device 10 is pushed onto the housing 2, 4.
  • the plug housings 20 are sealingly introduced into the housing connection openings 18. Due to the configuration of the contact receptacles 118, the plug-in elements 22 can perform a certain compensating movement as slots without the electrical contact between these plug-in elements 22 and the plug counter-elements 119 of the populated printed circuit board 14 being lost.
  • control housing frame 12 is bolted together with the control housing cover 16 against the housing 2, 4. Initially, the surfaces of the power dissipation-generating control components 98 abut against the cooling element contact surfaces 78. After assembly of the control housing 10 to the housings 2, 4, the power dissipation generating control components 98 are applied under bias to the housing-side cooling elements 76 and thus reliably connected thermally conductive. In the context of this assembly, in particular, the supporting pillars 116 of the compression elements 112 are elastically compressed, as a result of which an elastic prestressing is stored in the compression element 112.
  • FIGS. 12 and 13 show a further embodiment of an electric heating device according to the invention. Identical components are identified with the same reference numerals with respect to the previously discussed embodiments.
  • the embodiment of the Figures 12 and 13 has only a housing 2, which is provided with a cover member 6 for forming the circulation chamber 32 between the cover member 6 and the partition wall 30.
  • the exemplary embodiment further has a housing cover 130 which carries a pump 132 and at least partially forms a pump housing 134.
  • the housing cover 130 forms a flow inlet housing part 136, which fastening elements 138 for flanging the pump 132 and a hose connection piece 140 ausformt.
  • the cover member 6 has only on its underside facing the housing 2 sealing strip 74 corresponding to the structure of the tapered webs 70.
  • pumping channel 142 On the opposite top corresponding to a formed by the housing cover 130 pumping channel 142 extending sealing strips 74 are provided on the cover 6. This pumping channel 142 connects the flow passage opening 38 with the flow inlet housing part 136.
  • control box frame 12 is identical to that with reference to FIGS FIGS. 1 to 4 discussed embodiment formed. However, the control housing frame is partially closed by a control housing bottom cover 144 which forms an arcuate flange 146 which is screwed onto the top of the control housing cover 130.
  • the power supply and the control-moderate connection of the pump 132 is preferably also on the assembled printed circuit board 12. In the in the Figures 12 and 13 shown embodiment, this is done via a cable which connects the control device 11 with the pump 132. In the in the Figures 12 and 13 In the embodiment shown, the cable (not shown) extends from a side surface of the control housing frame 12 to the pump 32. However, a plug housing 20 may be equally well provided at the level of the pump 132, via which the electrical connection of the pump 132 takes place.
  • FIGS. 14 and 15 show a fourth embodiment. Identical components are identified with the same reference numerals with respect to the previously discussed.
  • the fourth embodiment comprises a housing 2, which is connected to a housing cover 148 and on the longitudinal sides mounting flanges 150 are mounted for attachment of the electric heater.
  • the control housing 10 At one end face of the housing 2 and the housing cover 148 is the control housing 10 with the received therein and in the Figures 14 and 15 not detailed control.
  • This control housing 10 is presently L-shaped with a housing cover 148 slightly projecting overhang 152, at the end faces of two cable clamps 154, 156 are mounted for torsional and zugêt support and sealing of cables.
  • the cable clamp 154 is for connection a control cable; the larger cable clamp 156 for connecting a power current cable.
  • the housing 2 is identical to the housing 2 described above. Reference is made to the above description.
  • the housing cover 148 has a resting on the housing 2 bottom plate 158, which cooperates with the edge of the housing 2 and the tapered webs 10 including the cover 6, whereby the circulation chamber 32 is sealed in the region of the tapered webs 70.
  • a flow passage 160 which communicates with a integrally formed on the housing cover 148 shaped tube 162 which extends parallel to the connecting piece 136 and ends substantially in the same height therewith.
  • That in the Figures 14 and 15 embodiment shown is relatively small and has a heat output of not more than 3 kW, usually a heat output of between 1, 5 and 2.8 kW.
  • the embodiment is suitable for example for battery preheating in electric vehicles.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Control Of Resistance Heating (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
EP20100013475 2010-10-08 2010-10-08 Elektrische Heizvorrichtung Active EP2440006B1 (de)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20100013475 EP2440006B1 (de) 2010-10-08 2010-10-08 Elektrische Heizvorrichtung
JP2011219193A JP5894406B2 (ja) 2010-10-08 2011-10-03 電熱装置
US13/252,503 US9119232B2 (en) 2010-10-08 2011-10-04 Electrical heating device
KR1020110102456A KR20120036774A (ko) 2010-10-08 2011-10-07 전기 가열 장치
CN201110300907.6A CN102563839B (zh) 2010-10-08 2011-10-08 电加热装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20100013475 EP2440006B1 (de) 2010-10-08 2010-10-08 Elektrische Heizvorrichtung

Publications (2)

Publication Number Publication Date
EP2440006A1 EP2440006A1 (de) 2012-04-11
EP2440006B1 true EP2440006B1 (de) 2015-02-25

Family

ID=43638819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20100013475 Active EP2440006B1 (de) 2010-10-08 2010-10-08 Elektrische Heizvorrichtung

Country Status (5)

Country Link
US (1) US9119232B2 (ko)
EP (1) EP2440006B1 (ko)
JP (1) JP5894406B2 (ko)
KR (1) KR20120036774A (ko)
CN (1) CN102563839B (ko)

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JP2012107804A (ja) * 2010-11-17 2012-06-07 Mitsubishi Heavy Ind Ltd 積層型熱交換器、それを用いた熱媒体加熱装置および車両用空調装置
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FR2988818B1 (fr) * 2012-03-28 2018-01-05 Valeo Systemes Thermiques Dispositif de chauffage electrique de fluide pour vehicule automobile et appareil de chauffage et/ou de climatisation associe
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EP2897230B1 (de) 2014-01-21 2019-05-15 Eberspächer catem GmbH & Co. KG Elektrische Steckverbindung insbesondere einer elektrischen Heizvorrichtung für ein Kraftfahrzeug
KR101675741B1 (ko) * 2015-03-02 2016-11-15 우리산업 주식회사 차량용 가열 난방장치
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DE102016224296A1 (de) * 2016-12-06 2018-06-07 Eberspächer Catem Gmbh & Co. Kg Elektrische heizvorrichtung
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Also Published As

Publication number Publication date
JP5894406B2 (ja) 2016-03-30
JP2012086833A (ja) 2012-05-10
US20120085743A1 (en) 2012-04-12
CN102563839A (zh) 2012-07-11
US9119232B2 (en) 2015-08-25
EP2440006A1 (de) 2012-04-11
KR20120036774A (ko) 2012-04-18
CN102563839B (zh) 2014-08-27

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